Stump-extractor.



E. A. ABLEMAN.

STUMP EXTRAGTOR.

APPLICATION FILED AUG. 21, 1909. 955,737. Patented Apr. 19, 1910.

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STUMP EXTRAGTOB. APPLICATION FILED AUG. 21, 1909.

955,737. Patntegi Apr. 19, 1910.

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EPHRAIM A. ABLEMAN, OF GI-IEEN, MINNESOTA.

STUMP-EXTRACTOR.

Specification of Letters Patent.

Patented Apr. 19, 1910.

Application filed August 21, 1909. Serial No. 513,990.

To all whom it may concern:

Be it known that I, EPHRAIM A. ABLEMAN, a citizen of the United States,residing at Gheen, in the county of St. Louis and State of Minnesota,have invented certain new and useful Improvements in Stump-Extractors,of which the following is a specification.

This invention relates to improvements in stump extractors, and has forits object to provide a device of this character, which is soconstructed that three different degrees of power may be easily secured,for different grades of work.

Another object is to provide a simply constructed stump extractor, whichis very substantially constructed whereby large and small tree stumpsmay be pulled with equal facility.

A further object is to provide two drums transversely mounted in thesupporting frame, which may be rotated in unison, or independently ofone another, as may be desired.

l/Vith these and other objects in view, the present invention consistsin the combination and arrangement of parts as will be hereinafter morefull described and particularly pointed out in the appended claims, itbeing understood that changes in the specific structure shown anddescribed may be made within the scope of the claims without departingfrom the spirit of the invention.

In the drawings forming a part of this specification, and in which likenumerals of reference indicate similar parts in the several views,Figure 1 is a side elevation of my improved stump extractor. Fig. 2 is aplan view thereof. Fig. 3 is a central vertical section through thesame. Fig. 4 is a transverse section taken on the line 4-4 of Fi 1.

Iteferring to the drawings, 1 indicates the two inclined side bars ofthe supporting frame, to which are secured at their rear ends, thestandards 2. The standards 2 are connected at their lower ends by asuitable brace bar 8, and the front and rear ends of the inclined bars 1are likewise connected by the brace bars 4. Guide bars 5 connect thestandards 2 and the bars 1, and complete the supporting frame. Thus avery sub-- stantial frame is constructed, which will be extremely rigidwhen placed in position, and will not be moved during the operation ofthe device.

Upon the upper edges of the bars 1 the metal bearing blocks 6 aresecured, and. are formed with the slots or recesses 7 to receive theends of the transverse shafts 8 and 9. An operating shaft is alsoremovably supported in the rear ends of the blocks 6, and may beconfined therein by the keys or set screws 11. Secured upon the shaft 8,and disposed within the side bars 1 of the frame, are the gear wheels12, which are engaged by pinions 13 secured upon the operating shaft 10.Loosely disposed upon the shaft 8, and extending approximately theentire width of the frame, is the spool 14, upon one end of which aratchet wheel 15 is secured. Pawls 16 are secured to the inner face ofone of the gears 12 and are normally adapted to engage with the teeth ofthe ratchet 15, thus rotating the spool 14 upon the rotation of theshaft 8. These pawls, however, may be held out of engagement with theratchet, so that the spool 14 may remain stationary upon the shaft 8when the same is rotated. Keyed upon the end of the shaft 8 is the gear17 and the ratchet 18. The ratchet 18 is normally looked upon androtates with the gear wheel 12, by means of a spring pressed pawl 19pivoted upon the side of the gear and engaged with the teeth of theratchet 18. The pinion 17 and ratchet 18 are carried by a sleeve 20,which is longitudinally movable upon the shaft 8. The sleeve 20 extendsthrough the slot 7 in the bearing block 6 and the pinion 17 is disposedupon the outer end thereof. A collar 21 is secured upon the sleeve 20,and the yoke 22 formed upon the lower end of the pivoted lever 23 isengaged in the annular groove of the collar. The adjusting lever 23 ispivoted upon the bracket 24 secured to the transverse bar 4. The upperedge of the bracket 24 is formed with the rack 25, the teeth of whichreceive the spring-actuated bolt mounted upon one side of the lever andactuated by means of the pivoted handle at the upper end thereof.

A gear wheel 26 is secured upon one end of the shaft 9, exteriorly ofthe inclined frame bars 1. This gear 26 is normally engaged with thepinion 17 upon the end of the shaft 8, and thus transmits rotary motionto the shaft 9. Secured upon the transverse shaft 9, and rotatabletherewith, is a roller 27, which is of considerably smaller diameterthan the spool 14. It will, of

- the rotation of the drum 27 is stopped.

course, be readily seen that when the pinion 17 is adjusted outwardlyupon the end of the shaft 8, the rotation of the roller 27 will cease.Secured upon the operating shaft 10, and centrally disposed between theside bars of the frame, the ratchet 28 is located. The teeth of thisratchet are engaged by a spring pressed dog 29 which is pivoted betweenthe ears of a plate secured to the transverse bar 4. Thus any retrogrademovement of the pinions 13 is prevented.

A cable 30 has its ends secured to the spool 14 and the roller 27, andpasses around the sheave 31, to which a suitable chain is at tachedwhich is adapted to be securely fastened to the tree stump. To the endsof the shaft 10 operating handles or cranks 32 are secured, by means ofwhich the spool and roller are rotated.

In the normal operation of the device, the pawls 16 are engaged with theteeth of the ratchet 15, and the pinion 17 is engaged with the gear 26,whereupon rotary movement will be imparted to both the spool 14 and theroller 27. As will be seen from Fig. 3, when the various parts are thusassociated, the cable 30 will be unwound from the roller 27, and woundupon the spool 14. Owing to the larger diameter of the spool 14, thesheave 31 will be gradually drawn inward or toward the drum, and thetree stump will be extracted from the ground. Both of the drums,however, are only used upon light work, and when heavier work is to bedone either one of the drums is used independently of the other. Thesmaller drum or roller 27 is used upon the heaviest work, while thespool 14 remains stationary, the shaft 8 rotating within the same. T0 attain this result, it is only necessary to slip the pawls 16 fromengagement with the teeth of the ratchet 15 and as the spool 14 isloosely mounted on the shaft 8, the rota tion of the spool will bestopped, while the pinion 17 engaging with the gear 26 will rotate theroller 27. One end of the cable 30 is now attached to the roller 27 theother end thereof being secured in any suitable manner to the supportingframe, whereby the full power of the drum 27 may be had. Should it bedesired, however, to use only the larger drum 14, the lever 23 is firstoperated to adjust the pinion 17 and ratchet 18 upon the end of theshaft 8. By moving the pinion 17 outwardly, as shown in dotted lines inFig. 2, the same is disengaged from the gear 26 upon the end of theshaft 9, and The dogs 16 are now again engaged with the teeth of theratchet l5 and the spool 14, upon which the ratchet is secured, will berotated. This drum is used singly for work which is somewhat lighterthan would. be necessary for the use of the drum 27. Thus it will beseen that three separate and distinct degrees of power may be secured,whereby the device may be readily adapted for heavy or light worl Eachof the shafts 8, 9 and 10 is removable from the slots 7 provided in thebearing blocks 6. These shafts are, however, securely confined in theblocks by means of the set screws 11. When it is desired to move thedevice from place to place, the drums 14 and 27, and the operating shaft10 may be readily removed from the frame, thus greatly lightening thesame so that 1t may be readily carried.

From the foregoing it will be seen that I have provided an extremelysimply constructed device, which may be employed for the extracting oftree stumps and for moving or elevating various objects of considerableweight. The differential drums may be instantly connected so that theywill operate in unison, and as quickly disassociated so that either oneof the drums may be singly employed. The device is very simply andinexpensively constructed and highly durable and efficient in itsoperation.

Vfhat is claimed is:

l. A machine of the class described, comprising a supporting frame,transverse differential drums mounted in said frame, an operating shaftmounted in said frame in parallel relation to said drums, gears arrangedat the end of one of said drums, and pinions secured to said shaft andengaging with said gears to cooperatively or independently rotate saiddrums.

2. A machine of the class described, comprising a supporting frame,transverse shafts removably mounted in said frame, a roller secured uponone of said shafts, a spool loosely mounted upon the other of saidshafts, gears secured to the ends of said shaft, a ratchet secured onone end of said spool, dogs pivoted upon the gear and normally engagedwith said ratchet, a pinion longitudinally movable upon the spool shaftand normally engaged with a gear upon the end of the other of saidshafts, and an op erating shaft removably supported on said framecarrying pinions engaging with the gears upon the spool shaft andadapted to impart rotary movement to said shaft.

3. A machine of the class described, comprising a supporting frame,transverse shafts removably supported upon said frame, a roller securedupon one of said shafts, a spool loosely disposed upon the other shaftand of larger diameter than said roller, a gear secured upon the end ofthe roller shaft, gears secured upon the spool shaft, a ratchet andpinion longitudinally movable upon the spool shaft, said pinion beingnormally engaged with the gear upon the end of the roller shaft, a pawlpivoted upon the gear secured to the spool shaft and engaged with saidratchet, a ratchet secured to the end of said spool and engaged by dogspivoted upon the gear wheel to rotatably connect the spool to the shaft,an operating shaft removably supported in the frame, pinions upon saidshaft engaged with the gears upon the ends of the spool shaft, a ratchetsecured upon the operating shaft, and a spring pressed dog pivoted uponsaid frame and engaged with said ratchet.

at. A device of the class described, comprising a supporting framehaving inclined parallel upper bars, bearing blocks secured to the upperedges of said bars, slots in said blocks, transverse shafts mounted insaid slots, set screws for confining said shafts therein, rollersdisposed upon said shafts, one of said rollers being of greater diameterthan the other, gears upon the ends of said shafts, a longitudinallymovable pinion upon one of said shafts, said pinion being movable intoand out of engagement with the gear secured upon the end of the other ofthe roller shafts, a lever supported upon the bearing block and adaptedto move said pinion, an operating shaft removably supported in saidbearing blocks, pinions upon said shaft engaging with the roller gears,a ratchet secured upon said shaft, and means engaging therewith toprevent the retrograde movement of said rollers.

In testimony whereof I aflix my signature, in presence of two witnesses.

EPHRAIM A. ABLEMAN. WVitnesses:

CHESTER O. OLDS, ARTHUR S. CORDERY.

